/*
 * Copyright (c) 2022 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
export function limit(lower, upper)
{
	if ((lower < 0) || (upper <= 0) || (upper < lower)) {
		throw new TypeError()
	}
	return `{${lower},${upper}}`
}

/**
 * Trims away any characters after the first match of {@code pattern} in {@code candidate},
 * returning the trimmed version.
 */
export function trimAfterFirstMatch(regexp, string)
{
	const index = string.search(regexp)

	if (index >= 0) {
		return string.slice(0, index)
	}

	return string
}

export function startsWith(string, substring)
{
	return string.indexOf(substring) === 0
}

export function endsWith(string, substring)
{
	return string.indexOf(substring, string.length - substring.length) === string.length - substring.length
}
